[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/e2fsprogs/chattr.c b/ap/app/busybox/src/e2fsprogs/chattr.c
new file mode 100644
index 0000000..f1cc838
--- /dev/null
+++ b/ap/app/busybox/src/e2fsprogs/chattr.c
@@ -0,0 +1,195 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * chattr.c - Change file attributes on an ext2 file system
+ *
+ * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
+ * Laboratoire MASI, Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * This file can be redistributed under the terms of the GNU General
+ * Public License
+ */
+
+/*
+ * History:
+ * 93/10/30 - Creation
+ * 93/11/13 - Replace stat() calls by lstat() to avoid loops
+ * 94/02/27 - Integrated in Ted's distribution
+ * 98/12/29 - Ignore symlinks when working recursively (G M Sipe)
+ * 98/12/29 - Display version info only when -V specified (G M Sipe)
+ */
+
+//usage:#define chattr_trivial_usage
+//usage: "[-R] [-+=AacDdijsStTu] [-v VERSION] [FILE]..."
+//usage:#define chattr_full_usage "\n\n"
+//usage: "Change file attributes on an ext2 fs\n"
+//usage: "\nModifiers:"
+//usage: "\n - Remove attributes"
+//usage: "\n + Add attributes"
+//usage: "\n = Set attributes"
+//usage: "\nAttributes:"
+//usage: "\n A Don't track atime"
+//usage: "\n a Append mode only"
+//usage: "\n c Enable compress"
+//usage: "\n D Write dir contents synchronously"
+//usage: "\n d Don't backup with dump"
+//usage: "\n i Cannot be modified (immutable)"
+//usage: "\n j Write all data to journal first"
+//usage: "\n s Zero disk storage when deleted"
+//usage: "\n S Write file contents synchronously"
+//usage: "\n t Disable tail-merging of partial blocks with other files"
+//usage: "\n u Allow file to be undeleted"
+//usage: "\n -R Recurse"
+//usage: "\n -v Set the file's version/generation number"
+
+#include "libbb.h"
+#include "e2fs_lib.h"
+
+#define OPT_ADD 1
+#define OPT_REM 2
+#define OPT_SET 4
+#define OPT_SET_VER 8
+
+struct globals {
+ unsigned long version;
+ unsigned long af;
+ unsigned long rf;
+ smallint flags;
+ smallint recursive;
+};
+
+static unsigned long get_flag(char c)
+{
+ const char *fp = strchr(e2attr_flags_sname_chattr, c);
+ if (fp)
+ return e2attr_flags_value_chattr[fp - e2attr_flags_sname_chattr];
+ bb_show_usage();
+}
+
+static int decode_arg(const char *arg, struct globals *gp)
+{
+ unsigned long *fl;
+ char opt = *arg++;
+
+ fl = &gp->af;
+ if (opt == '-') {
+ gp->flags |= OPT_REM;
+ fl = &gp->rf;
+ } else if (opt == '+') {
+ gp->flags |= OPT_ADD;
+ } else if (opt == '=') {
+ gp->flags |= OPT_SET;
+ } else
+ return 0;
+
+ while (*arg)
+ *fl |= get_flag(*arg++);
+
+ return 1;
+}
+
+static void change_attributes(const char *name, struct globals *gp);
+
+static int FAST_FUNC chattr_dir_proc(const char *dir_name, struct dirent *de, void *gp)
+{
+ char *path = concat_subpath_file(dir_name, de->d_name);
+ /* path is NULL if de->d_name is "." or "..", else... */
+ if (path) {
+ change_attributes(path, gp);
+ free(path);
+ }
+ return 0;
+}
+
+static void change_attributes(const char *name, struct globals *gp)
+{
+ unsigned long fsflags;
+ struct stat st;
+
+ if (lstat(name, &st) != 0) {
+ bb_perror_msg("stat %s", name);
+ return;
+ }
+ if (S_ISLNK(st.st_mode) && gp->recursive)
+ return;
+
+ /* Don't try to open device files, fifos etc. We probably
+ * ought to display an error if the file was explicitly given
+ * on the command line (whether or not recursive was
+ * requested). */
+ if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
+ return;
+
+ if (gp->flags & OPT_SET_VER)
+ if (fsetversion(name, gp->version) != 0)
+ bb_perror_msg("setting version on %s", name);
+
+ if (gp->flags & OPT_SET) {
+ fsflags = gp->af;
+ } else {
+ if (fgetflags(name, &fsflags) != 0) {
+ bb_perror_msg("reading flags on %s", name);
+ goto skip_setflags;
+ }
+ /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */
+ fsflags &= ~gp->rf;
+ /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */
+ fsflags |= gp->af;
+ /* What is this? And why it's not done for SET case? */
+ if (!S_ISDIR(st.st_mode))
+ fsflags &= ~EXT2_DIRSYNC_FL;
+ }
+ if (fsetflags(name, fsflags) != 0)
+ bb_perror_msg("setting flags on %s", name);
+
+ skip_setflags:
+ if (gp->recursive && S_ISDIR(st.st_mode))
+ iterate_on_dir(name, chattr_dir_proc, gp);
+}
+
+int chattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int chattr_main(int argc UNUSED_PARAM, char **argv)
+{
+ struct globals g;
+ char *arg;
+
+ memset(&g, 0, sizeof(g));
+
+ /* parse the args */
+ while ((arg = *++argv)) {
+ /* take care of -R and -v <version> */
+ if (arg[0] == '-'
+ && (arg[1] == 'R' || arg[1] == 'v')
+ && !arg[2]
+ ) {
+ if (arg[1] == 'R') {
+ g.recursive = 1;
+ continue;
+ }
+ /* arg[1] == 'v' */
+ if (!*++argv)
+ bb_show_usage();
+ g.version = xatoul(*argv);
+ g.flags |= OPT_SET_VER;
+ continue;
+ }
+
+ if (!decode_arg(arg, &g))
+ break;
+ }
+
+ /* run sanity checks on all the arguments given us */
+ if (!*argv)
+ bb_show_usage();
+ if ((g.flags & OPT_SET) && (g.flags & (OPT_ADD|OPT_REM)))
+ bb_error_msg_and_die("= is incompatible with - and +");
+ if (g.rf & g.af)
+ bb_error_msg_and_die("can't set and unset a flag");
+ if (!g.flags)
+ bb_error_msg_and_die("must use '-v', =, - or +");
+
+ /* now run chattr on all the files passed to us */
+ do change_attributes(*argv, &g); while (*++argv);
+
+ return EXIT_SUCCESS;
+}